Acer — detachable laptop purchased keyboard mouse not working properly

Acer detachable laptop bought three months back, is in warranty period.
It is detachable laptop.
Keyboard and mouse not working properly sometimes work, sometimes not.
Lodge a complain to acer service centre on 4 th june.
But only via mail company is giving response it will take time, work is going on this issue.
Reference number-acr0611698
Case id[protected]